WO2013079019A1 - Procédé de communication, station de base, contrôleur de station de base et centre de commutation de communications mobiles - Google Patents

Procédé de communication, station de base, contrôleur de station de base et centre de commutation de communications mobiles Download PDF

Info

Publication number
WO2013079019A1
WO2013079019A1 PCT/CN2012/085654 CN2012085654W WO2013079019A1 WO 2013079019 A1 WO2013079019 A1 WO 2013079019A1 CN 2012085654 W CN2012085654 W CN 2012085654W WO 2013079019 A1 WO2013079019 A1 WO 2013079019A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
transport layer
layer address
station controller
connection
Prior art date
Application number
PCT/CN2012/085654
Other languages
English (en)
Chinese (zh)
Inventor
邹成钢
朱星
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2013079019A1 publication Critical patent/WO2013079019A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • Embodiments of the present invention relate to the field of wireless communications, and more particularly, to a communication method, a base station, a base station controller, and a mobile switching center. Background technique
  • the IP (Internet Protocol) of the Global System of Mobile Communication (GSM) is gradually becoming a trend of telecommunication networks and is becoming more and more widely used.
  • the IP of the wireless network can effectively reduce the end to The unit bit cost of the end.
  • BTS Base Transceiver Station
  • BSC Base Station
  • the Abis interface transmission link between the station controller and the base station controller uses an IP bearer.
  • the voice and signaling and operation and maintenance link messages are encapsulated in IP packets, that is, Abis over IP.
  • IP packets After the Abis over IP, the transmission of the end user's voice call between the BTS, the BSC, and the CN (Core Network) is completely in the form of an IP packet for packet exchange and forwarding.
  • the call identifiers of different users are distinguished by the 5-tuple of the IP transport layer: the source IP address, the destination IP address, the source UDP (User Datagram Protocol) port number, the destination UDP port number, and the protocol type.
  • the signaling and operation and maintenance messages of the Abis interface are also distinguished according to the above 5-tuple information of the IP packet.
  • BSC local exchange means that when a pair of voice calls is established, if the BSC or MSC detects that both the calling party and the called party are covered by the same BSC, the call signal establishes a loopback inside the BSC, and only the MSC (Mobile Switching Center) is reserved.
  • the central) signaling link releases the occupied TC (transcoder, code converter) resources and the Ater interface resources.
  • the Ater interface is the interface between the BSC and the TC.
  • BTS local exchange means that when a pair of voice calls is established, if the BSC or MSC detects that both the calling party and the called party are covered by the same BTS or BTS group, the call signal is established in the BTS or BTS group. Loopback, only retains the signaling link of the MSC, and translates the occupied Ater interface resources, Abis interface resources, and TC resources.
  • the embodiments of the present invention provide a communication method, a base station, a base station controller, and a mobile switching center, which can directly transmit call voice data between base stations of a base station controller.
  • a communication method including: receiving, by a first base station, a first Internet Protocol IP transport layer address allocated by a first base station controller for a first base station, and receiving, by a first base station controller, a second base station controller a second IP transport layer address allocated by the second base station; the first base station establishes a user plane through connection with the second base station by using the first IP transport layer address and the second IP transport layer address.
  • a communication method including: a first base station controller assigning a first internet protocol IP transport layer address to a first base station; and a first base station controller receiving a second base station controller assigning a second base station to a second base station The second IP transport layer address; the first base station controller sends the first IP transport layer address and the second IP transport layer address to the first base station.
  • a communication method including: receiving, by a first mobile switching center, a second Internet Protocol IP transport layer address allocated by a second base station controller for a second base station from a second mobile switching center; Sending a second IP transport layer address to the first base station controller.
  • a base station including: a receiving unit, configured to receive a first Internet Protocol IP transport layer address allocated by a first base station controller for a base station, and receive, by a first base station controller, a second base station controller a second IP transport layer address allocated by the second base station; and a connecting unit, configured to establish a user plane through connection with the second base station by using the first IP transport layer address and the second IP transport layer address.
  • a base station controller including: an allocating unit, configured to allocate a first Internet Protocol IP transport layer address to the first base station; and a receiving unit, configured to receive, by the second base station controller, the second base station controller a second IP transport layer address; a sending unit, configured to send the first IP transport layer address and the second IP transport layer address to the first base station.
  • a mobile switching center including: a receiving unit, configured to receive, by a second mobile switching center, a second Internet Protocol IP transport layer allocated by the second base station controller to the second base station An sending unit, configured to send a second IP transport layer address to the first base station controller.
  • the base station can learn the IP transport layer address of another base station under different base station controllers, so that the user plane direct connection can be realized by using the routing function of the IP transport network, and the base station across the base station controller is directly implemented. Pass the call voice data.
  • FIG. 1 is a flow chart of a communication method in accordance with an embodiment of the present invention.
  • FIG. 2 is a flow chart of a communication method according to another embodiment of the present invention.
  • FIG. 3 is a flow chart of a communication method according to another embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a process of establishing a user plane through connection according to an embodiment of the present invention.
  • Figure 5 is a schematic flow chart showing the process of establishing/releasing a straight-through connection during a call in accordance with another embodiment of the present invention.
  • Figure 6 is a schematic flow chart showing the process of establishing/releasing a straight-through connection during a call in accordance with another embodiment of the present invention.
  • Figure 7 is a schematic block diagram of a base station in accordance with one embodiment of the present invention.
  • Figure 8 is a schematic block diagram of a base station controller in accordance with one embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of a base station controller according to another embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of a mobile switching center in accordance with one embodiment of the present invention. detailed description
  • the technical solution of the present invention can be applied to various communication systems, for example: GSM, Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access Wireless), General Packet Radio Service (GPRS), Long Term Evolution (LTE), etc.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access Wireless
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • a user equipment which may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network).
  • the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer having a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle,
  • the wireless access network exchanges languages and/or data.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved base station
  • e-NodeB evolutional Node B
  • FIG. 1 is a flow chart of a communication method in accordance with an embodiment of the present invention. The method of Figure 1 is performed by a calling subscriber equipment or a base station (BTS) of the called subscriber equipment.
  • BTS base station
  • the first base station receives a first IP transport layer address allocated by the first base station controller for the first base station, and receives, by the first base station controller, a second IP transport layer address allocated by the second base station controller to the second base station.
  • the IP transport layer address includes an IP address and user call identifier information.
  • An example of a user call identification information is a UDP port number.
  • the UDP port number is described as the user call identification information, but the embodiment of the present invention is not limited thereto, and any information capable of identifying the user's call can be used.
  • the first base station and the second base station are respectively a base station of the calling user equipment or a base station of the called user equipment.
  • the first base station is a serving base station of the called user equipment
  • the second base station is a serving base station of the called user equipment.
  • the first base station is a serving base station of the called user equipment
  • the second base station is a serving base station of the calling user equipment.
  • the first base station controller is a controller (BSC) for controlling the first base station, and assigns a first IP transport layer address to the first base station.
  • the second base station controller is a controller (BSC) for controlling the second base station, and assigns a second IP transport layer address to the second base station.
  • the first base station and the second base station can mutually notify the IP transport layer address through the two base station controllers.
  • the first base station controller and the second base station controller may be different BSCs.
  • the embodiment of the present invention does not limit the manner in which the first base station receives the first IP transport layer address and the second IP transport layer address.
  • the first base station may receive the first IP transport layer address and the second IP transport layer address, respectively, and the first base station may also receive the two IP transport layer addresses in one message.
  • the first base station may receive a channel activation message sent by the first base station controller, where the channel activation message carries a first IP transport layer address and/or a second IP transport layer address.
  • the first base station establishes a user plane through connection with the second base station by using the first IP transport layer address and the second IP transport layer address.
  • the meaning of establishing a user plane direct connection between the BTSs includes: the media data stream of the calling and called user planes of any voice call is directly transmitted between the BTSs without entering the core network via the BSC; and the call control
  • the face signaling data still uses the existing delivery path and enters the core network via the BSC.
  • the primary and called users can belong to the same BSC or belong to different BSCs.
  • the first base station can utilize the routing function of the IP transport network to implement a user plane direct connection, thereby realizing direct transmission of call voice between base stations of the base station controller. data.
  • the first base station may receive the first user call flow information table and the second user call flow information table from the first base station controller.
  • the first base station controller can transmit the two sets of subscriber call flow information tables to the first base station upon channel activation.
  • the first user call flow information table is a user call flow information table of the first base station to the first base station controller
  • the second user call flow information table is a user call flow information table of the first base station to the second base station.
  • the first user call flow information table is available for use by the first base station before establishing a user plane direct connection between the first base station and the second base station
  • the second user call flow information table is available for the first base station at the first base station and Used after establishing a user plane through connection between the two base stations.
  • the first base station may detect whether the second base station is reachable by using the first IP transport layer address and the second IP transport layer address, and send the detection result to the first A base station controller.
  • the first base station can detect whether the second base station is reachable by using a UDP ping command.
  • the first base station controller can send the direct feasibility indication information to the first mobile switching center according to the detection result, and the direct feasibility indication information is used to indicate whether the user plane through connection can be established between the first base station and the second base station.
  • the first base station controller may carry the above-mentioned through-feasibility indication information in the form of a cell in the assignment completion message.
  • the first base station may receive a direct connection control message from the first base station controller, where the direct connection control message is used to indicate that the user plane through connection is established. The first base station can then send a direct connect reply message to the first base station controller.
  • the first base station may also receive a direct connection control message from the first base station controller.
  • the pass-through control message can also be used to indicate that the user plane is directly connected, or dual-issue is required to meet legal listening requirements.
  • FIG. 2 is a flow chart of a communication method according to another embodiment of the present invention.
  • the method of Figure 2 is performed by a calling subscriber equipment or a base station controller (BSC) of the called subscriber equipment and corresponds to the method of Figure 1 . Therefore, the repeated description will be omitted as appropriate.
  • BSC base station controller
  • the first base station controller allocates a first IP transport layer address to the first base station.
  • the first base station controller can allocate the IP transport layer address to the first base station in an existing manner, and therefore the process of assigning the IP transport layer address will not be described in detail.
  • the first base station controller may initiate a call according to an access reason in a Channel Required message sent by the first base station, and allocate a first IP transport layer address to the first base station for the call branch.
  • the first base station controller receives a second IP transport layer address allocated by the second base station controller to the second base station.
  • the second base station controller may be a different BSC than the first base station controller, and may allocate an IP transport layer address to the second base station in an existing manner, and thus the process of assigning an IP transport layer address will not be described in detail.
  • the second base station controller may initiate a call according to an access reason in a Channel Required message sent by the second base station, and allocate a second IP transport layer address to the second base station for the call branch.
  • the first base station and the second base station are respectively a base station of the calling user equipment or a base station of the called user equipment.
  • the first base station is a serving base station of the called user equipment
  • the second base station is a serving base station of the called user equipment.
  • the first base station is a serving base station of the called user equipment
  • the second base station is a serving base station of the calling user equipment.
  • the first base station controller sends the first IP transport layer address and the second IP transport layer address to the first base station.
  • the first base station can establish a user plane through connection with the second base station by using the first IP transport layer address and the second IP transport layer address.
  • the base station in the embodiment of the present invention can learn the IP transport layer address of another base station under different base station controllers, so that the user plane direct connection can be realized by using the routing function of the IP transport network, and the direct transmission between the base stations of the base station controller is realized. Call voice data.
  • the first base station controller may send a channel activation message to the first base station, where the channel activation message carries the first IP transport layer address and/or the second IP transport layer address.
  • the first base station controller may send the first user call flow information table and the second user call flow information table to the first base station.
  • the first base station controller can transmit the two sets of user call flow information tables to the first base station when the channel is activated.
  • the first user call flow information table is a user call flow information table of the first base station to the first base station controller
  • the second user call flow information table is a user call flow information table of the first base station to the second base station.
  • the first user call flow information table is used by the first base station before establishing a user plane direct connection between the first base station and the second base station
  • the second user call flow information table is available to the first base station at the first base station and the second base station. Used after establishing a user plane passthrough connection.
  • the first base station controller may receive, by using the first IP transport layer address and the second IP transport layer address, the first base station to detect whether the second base station is reachable.
  • the first base station controller may send a direct feasibility indication information to the first mobile switching center according to the detection result, and the direct feasibility indication information is used to indicate whether a user plane through connection can be established between the first base station and the second base station.
  • the first base station controller may carry the above-mentioned through-feasibility indication information in the form of a cell in the assignment completion message.
  • the first base station controller may receive a direct connection control message from the first mobile switching center, where the direct connection control message is used to indicate establishing a user plane through connection, releasing the user plane through connection, or implementing dual Send to meet legal monitoring needs.
  • the first base station controller can forward the through connection control message to the first base station.
  • the first base station controller can then receive a direct connect reply message from the first base station.
  • the first base station controller may Start the first timer. If the first base station controller does not receive the direct connection response message sent by the first base station after the first timer expires, the first base station controller may request the first base station to abandon the establishment of the user plane through connection, and switch to the first mobile exchange. The center sends a direct connection loss The failure message, the through connection failure message is used to indicate that the user plane through connection cannot be established.
  • the first base station controller may Start the second timer. If the first base station controller does not receive the direct connection response message sent by the first base station after the second timer expires, the first base station controller may send a clear request message to the first mobile switching center to notify the first mobile switching center. Release the call.
  • the first base station controller may further send the completion layer 3 information message to the first mobile switching center, and complete The layer 3 information message carries the first IP transport layer address.
  • the first base station controller may receive an assignment request message from the first mobile switching center, where the assignment request message carries the second IP transport layer address.
  • FIG. 3 is a flow chart of a communication method according to another embodiment of the present invention.
  • the method of Figure 3 is performed by the calling subscriber equipment or the Mobile Switch Center (MSC) of the called subscriber equipment and corresponds to the method of Figures 1 and 2. Therefore, the repeated description will be omitted as appropriate.
  • MSC Mobile Switch Center
  • the first mobile switching center receives, from the second mobile switching center, a second Internet Protocol IP transport layer address allocated by the second base station controller to the second base station.
  • the first mobile switching center is the MSC of the first base station controller and the second mobile switching center is the MSC of the second base station controller.
  • the first mobile switching center and the second mobile switching center may be the same MSC or different MSCs.
  • the first mobile switching center sends a second IP transport layer address to the first base station controller.
  • the first base station controller can transmit a second IP transport layer address to the first base station and a first IP transport layer address assigned by the first base station controller to the first base station.
  • the first base station can establish a user plane through connection with the second base station by using the first IP transport layer address and the second IP transport layer address.
  • the base station in the embodiment of the present invention can learn the IP transport layer address of another base station under different base station controllers, so that the user plane direct connection can be realized by using the routing function of the IP transport network, and the direct transmission between the base stations of the base station controller is realized. Call voice data.
  • the first mobile switching center may receive the through-feasibility indication information from the first base station controller.
  • the pass-through feasibility indication information is used to indicate whether the user plane through connection can be established between the first base station and the second base station.
  • the first shift The mobile switching center may send indication information indicating that the first base station supports the straight-through to the second mobile switching center.
  • the first mobile switching center may send indication information indicating that the first base station does not support the straight-through to the second mobile switching center.
  • the first mobile switching center may send the pass-through to the first base station controller according to the straight-through feasibility indication information and the indication information received from the second mobile switching center indicating whether the second base station supports the direct-through.
  • Connect control messages The pass-through connection control message is used to indicate that the user-side through connection is established, the user plane is directly connected, or dual-issue is implemented to meet the legitimate listening requirement.
  • the BTSs of the calling and called users can mutually transmit their respective IP transport layer information, that is, the BTSs of the calling parties can know each other's IP transport layer addresses (for example, IP address + UDP port number), and further
  • the routing function of the IP transmission network is used to directly transmit the voice data of the user plane between the two BTSs.
  • the user plane pass-through function can be realized, which makes it possible to directly connect user planes between BTSs on a larger scale, and can save transmission resources and TC resources to a greater extent.
  • the satellite relay or other connection mode is adopted to reduce the Abis transmission delay, which can reduce the transmission delay of the user plane data of the voice call and improve the voice quality.
  • Embodiments of the invention. 4 is a schematic flow chart of a process of establishing a user plane through connection according to an embodiment of the present invention.
  • the embodiment of Figure 4 is applied to a cross-MSC scenario where the mobile switching center oMSC of the calling subscriber equipment oMS and the mobile switching centre tMSC of the called subscriber equipment tMS are different MSCs.
  • the embodiment of the present invention is not limited to this scenario, and may be similarly applied to the scenario where the oMSC and the tMSC are the same MSC, and such an application still falls within the scope of the present invention.
  • the oMSC and the tMSC are specific examples of the above-described first mobile switching center or second mobile switching center.
  • the oBTS is a serving base station of the oMS
  • the tBTS is a serving base station of the tMS, which are specific examples of the above-described first base station or second base station.
  • oBSC is a controller of oBTS, a controller of tBSC tBTS, which are specific examples of the above-mentioned base station controller.
  • the BTS can be collectively referred to as oBTS and tBTS without distinction, and the corresponding OBSC and tBSC are collectively referred to by the BSC, and the corresponding oMSC and tMSC are collectively referred to using the MSC.
  • 401 The service request processing process of the existing call flow can be adopted.
  • the corresponding call flow defined by the 3GPP LCLS can be referred to.
  • 3GPP established the Local Exchange Research Project (3GPP LCLSTR23.889) in 2009 to support the lawful interception function and supplementary services while providing local exchange.
  • 3GPP LCLSTR23.889 the Local Exchange Research Project
  • the oBSC may initiate a normal voice call according to the access reason in the Channel Required message sent by the oBTS, and allocate the IP transport layer address of the oBTS for the call branch.
  • the IP transport layer address may contain 5-tuple information: source/destination IP address pair + source/destination UDP port number, protocol type.
  • the oBSC sends a Complete Layer 3 Information message to the oMSC.
  • the Complete Layer 3 Information message may include a CM (Connection Management) service request (CM Service Request) issued by the oMS.
  • CM Service Request CM Service Request
  • the IP transport layer address of the oBTS is carried in the Complete Layer 3 Information message. If the oBSC does not support a straight-through connection, the IP transport layer address of the oBTS is not carried.
  • a port-through pass-through transport layer address cell in the existing Complete Layer 3 Information message Mesh Transport Layer Address (BTS).
  • BSS Mesh Transport Layer Address
  • the fact that the cell is carried in the Complete Layer 3 Information message indicates that the local BSS supports a straight-through connection, and the cell includes the IP address and UDP port number of the local base station.
  • the cell is not carried in the Complete Layer 3 Information message or the cell is empty, it means that the local BSS does not support the direct connection.
  • the oMSC Based on the AoIP (A over IP) codec negotiation procedure, the oMSC informs the tMSC of the IP transport layer address of the oBTS.
  • AoIP A over IP
  • the paging process of the existing call flow can be used.
  • the tBSC judges that it is a paging response to the voice call according to the access reason, and allocates the IP transport layer address of the tBTS for the call branch.
  • the tBSC sends a Complete Layer 3 Information (including a Paging Response sent by the tMS) message to the tMSC, where the IP transport layer address of the tBTS is carried in the message.
  • a Complete Layer 3 Information including a Paging Response sent by the tMS
  • the tMSC uses the OoBTC (Out of Band Transcoder Control) procedure to notify the oMSC, the IP transport layer address of the tBTS.
  • OoBTC Out of Band Transcoder Control
  • the MSC sends an Assignment Request message to the BSC.
  • the assignment request message carries an IP transport layer address of the BTS where the opposite end of the call is located.
  • the base station direct transmission layer may be added to the existing Assignment Request message.
  • Address cell Mesh Transport Layer Address (BTS)— If the message is carried in the Assignment Request message, it indicates that the peer BSS supports a direct connection, which includes the IP address and UDP port number of the opposite base station. If the cell is not carried in the Assignment Request message or the cell is empty, it indicates that the peer BSS does not support the through connection.
  • BTS Mesh Transport Layer Address
  • the BSC sends a Channel Activation message to the BTS.
  • the channel activation message carries an IP transport layer address of the BTS where the oMS and/or the tMS are located.
  • the BSC when the BSC is activated, the BSC sends two sets of user call flow information tables (or simply “flow tables”) to the BTS, for example, may be referred to as a first user call flow information table and a second user.
  • Call flow information table is a user call flow information table of the BTS to BSC
  • the second user call flow information table is a user call flow information table of the BTS to the opposite BTS.
  • the BTS uses the first user call flow information table; after establishing a user plane direct connection between the BTSs, for example, after the BTS receives the command to establish a user plane through connection, the second user is used. Call flow information table.
  • the BTS can use the IP addresses of the two BTSs received in step 408 to detect whether the peer BTS is reachable. For example, the BTS can detect whether the peer base station is reachable through the UDP ping command, and inform the BSC of the detection result.
  • the BSC In combination with the detection result of the BTS, the BSC sends an Assignment Complete message to the MSC.
  • the assignment completion message carries Mesh Feasibility indication information (for example, in the form of a cell), and the direct feasibility indication information is used to indicate whether a user plane can be established between the two base stations oBTS and tBSC. Direct connection. For example, if the IP transport layer address of the peer BTS is reachable, the Mesh Feasibility cell has a value of 1; otherwise, the Mesh Feasibility cell has a value of 0. If the BSC does not support the straight-through connection, it does not carry Mesh Feasibility cells.
  • the identifier of the Mesh Feasibility cell may be 1000 1000.
  • the CPG message may carry a Mesh Control indication information.
  • the pass-through control indication information is used to instruct the MSC to receive the Mesh Feasibility cell sent by the BSC, and the MSC supports the pass-through function.
  • the tMSC can parse the indication information. If the direct connection is indicated to be unavailable, the related direct connection processing is no longer enabled. The principle of dealing with situations within the bureau is similar. 413-417: The existing call flow can be used. It should be noted that the call user plane data path still passes through the core network. That is, if the oMS is activated by the ring back tone service, the oMS can hear the ring tones music.
  • the tMSC may carry a Mesh Control indication message in the ACM (Address Complete Message) of the forward office to indicate whether the local end (tBTS) supports the through connection. If the information is not carried, the related through connection processing is no longer enabled.
  • ACM Address Complete Message
  • the MSC determines that the current call meets the conditions for establishing a direct connection:
  • TrFO Transcoder Free Operation
  • the BSC is notified to establish a straight-through connection through a Mesh Connect Control message. If the condition for establishing a direct connection is not met, the MSC does not notify the BSC that the direct connection control message is not sent.
  • the MSC may not send a Mesh Connect Control message, or may require the BSC to implement dual-issue to support lawful interception.
  • the Mesh Connect Control message may carry a Mesh Control Indicator (MCI) cell, where the cell is used to indicate that the user plane is directly connected, the user plane is directly connected, or the dual is implemented. Send to meet legal monitoring needs.
  • MCI Mesh Control Indicator
  • the cell identifier of the MCI may be 1000 1001.
  • the BSC notifies the BTS to establish a direct connection, and the BTS can adopt a new user call flow information table.
  • the BTS sends a Mesh Connect Ack message to the BSC.
  • the BSC sends a Mesh Connect Ack message to the MSC.
  • MSC After receiving the BSC direct connection response message, the IP endpoint resource located on the MGW (Media GateWay) is reserved until the end of the call.
  • the Mesh Connect Ack message in steps 425 and 426 may carry a Mesh Connect Result (MCR) cell indicating the result of performing a setup or release of the through connection.
  • MCR Mesh Connect Result
  • the cell identifier of the MCR may be 1000 1010.
  • the user plane direct connection between the oBTS and the tBTS has been established, and the user plane data transmission can be directly performed by using the IP transmission network.
  • the first timer Tab-1 is started (Timer Abis Mesh) -1 ; First Abis pass-through timer). If the Mesh Connect Ack sent by the BTS has not been received after the timeout of the Tab-1, the Mesh connection is abandoned, and the BTS is not required to establish a Mesh connection.
  • a Mesh Connect Failure message is sent to the MSC.
  • the connection failure message is used to indicate that a user plane passthrough connection cannot be established.
  • the BTS direct connection response message in this case, the direct connection release response message
  • the MSC After receiving the Mesh Connect Failure message, the MSC notifies the peer MSC that a straight-through connection cannot be established in the response message. If the peer MSC learns that the direct connection of the local end has been established, the MSC notifies the local BSS to cancel the direct connection, and the user's voice channel is still transmitted through the core network.
  • the MSC may notify the BSC to import the voice channel into the core network through a Mesh control message to perform playback control.
  • a direct connection can be established for a call that does not establish a user plane through connection, or an established user plane through connection can be released.
  • the establishment/deactivation of the direct connection during the call may be initiated by the radio side (BSS) or by the core network side (MSC).
  • Figure 5 is a schematic flow chart showing the process of establishing/releasing a straight-through connection during a call in accordance with another embodiment of the present invention.
  • the process is initiated by the oBSC, but embodiments of the invention are not limited thereto.
  • the method of Figure 5 can be similarly applied to the case where the process is initiated by the tBSC.
  • the method of Figure 5 can also be applied to scenarios that are not cross-MSC.
  • the oBSC sends a Mesh Connect Required message to the oMSC.
  • the through connection request message is used to indicate establishing or releasing a through connection.
  • the BSC may first use the through connection request message to request to release the through connection, and then perform a normal handover procedure.
  • the direct connection request message may be sent after the handover is completed to establish a through connection.
  • the through connection request message may carry a through connection indication (Mesh Control
  • MCI A cell that is used to indicate the establishment of a user plane pass-through connection or a user plane pass-through connection, for example, 01 or 00.
  • the direct connection request message also carries the base station direct transmission layer address cell: Mesh Transport Layer Address (BTS), which indicates the IP transport layer address of the local BTS (ie, oBTS).
  • BTS Mesh Transport Layer Address
  • FIG. 4 extends the existing Complete Layer 3 Information message to carry the IP transport layer address of the BTS, and the embodiment of FIG. 5 carries the BTS IP transport layer through a dedicated through connection request message. address.
  • the message type of the through connection request message may be 0111 0110.
  • the oMSC sends a Mesh Connect Request message to the tMSC according to the through connection request message received in step 501 to request the tMSC to establish or cancel the through connection.
  • the through connection request message may also carry the same MCI and BTS IP transport layer address as in the above straight through connection request message.
  • the MCI carried in the direct connection request message can also instruct the BSS to implement dual transmission (for example, the MCI can take a value of 10 at this time).
  • the message type of the through connection request message may be 0111 0111. 503.
  • the tMSC forwards the direct connection request message to the tBSC.
  • the tBSC sends a Mesh Connect Request Ack message to the tMSC as a response to the through connection request message.
  • the direct connection request response message may carry a Mesh Feasibility cell, and is used to indicate whether the BSS side of the local end can establish a through connection.
  • the direct connection request response message may also carry a base station direct transmission layer address cell: Mesh Transport Layer Address (BTS), which represents the IP transport layer address of the local BTS (ie, tBTS).
  • BTS Mesh Transport Layer Address
  • the message type of the direct connection request response message may be 0111 1000.
  • the tMSC forwards the direct connection request response message to the oMSC.
  • the MSC sends a Mesh Connect Control message to the respective BSC.
  • the through connection control message is similar to the through connection control message in Figure 4 and therefore will not be described in detail.
  • the BSC sends a Mesh Connect Control Ack message to the respective MSC.
  • the through connection control response message is similar to the through connection control response message in FIG. 4 and therefore will not be described in detail.
  • the Mesh Connect Control message is not sent.
  • the oMSC finds that the through connection cannot be established, the oBSC is notified not to establish a through connection. After the oBSC receives the notification, it will not attempt to establish a direct connection until the end of the call.
  • Figure 6 is a schematic flow chart showing the process of establishing/releasing a straight-through connection during a call in accordance with another embodiment of the present invention.
  • the process is initiated by the oMSC, but embodiments of the invention are not limited thereto.
  • the method of Figure 6 can be similarly applied to the case where the process is initiated by the tMSC.
  • the method of Figure 6 can also be applied to scenarios that are not cross-MSC.
  • the oMSC sends a Mesh Connect Request message to the tMSC to request the tMSC to establish or release the through connection.
  • the pass-through connection request message can be similar to the pass-through connection request message sent in step 502 of Figure 5 and therefore will not be described in detail.
  • the MSC finds that the local end can establish a direct connection, but the direct connection is not established, try to negotiate with the opposite MSC to see if it can Establish a straight-through connection.
  • the MSC finds that it needs to perform a supplementary service that conflicts with the through connection (for example, playback during a call)
  • the BSC is notified to cancel the through connection.
  • a direct operation is initiated.
  • Steps 602-606 of Fig. 6 are similar to steps 503-507 of Fig. 5, respectively, and therefore the description will not be repeated. According to the embodiment of Fig. 6, the through connection can also be established/released between the BTSs.
  • the BJ does not deliver the Mesh Connect Control message. At the same time, oMSC will not attempt to establish a direct connection before the end of this call.
  • FIG. 7 is a schematic block diagram of a base station in accordance with one embodiment of the present invention.
  • An example of the base station 70 of Figure 7 is a diagram
  • the oBTS or tBTS in 4 includes a receiving unit 71 and a connecting unit 72.
  • the receiving unit 71 receives the first IP transport layer address allocated by the first base station controller for the base station, and receives, from the first base station controller, the second IP transport layer address allocated by the second base station controller for the second base station.
  • the connecting unit 72 establishes a user plane through connection with the second base station by using the first IP transport layer address and the second IP transport layer address.
  • the base station in the embodiment of the present invention can learn the IP transport layer address of another base station under different base station controllers, so that the user plane direct connection can be realized by using the routing function of the IP transport network, and the direct transmission between the base stations of the base station controller is realized. Call voice data.
  • the base station 70 can perform operations related to the base station in Figures 1 through 4, and will not be described in detail to avoid repetition.
  • base station 70 can be the serving base station of the calling user equipment (oBTS of Figure 4) and the second base station is the serving base station of the called user equipment (tBTS of Figure 4).
  • base station 70 may be the serving base station of the called user equipment (tBTS of Figure 4), and the second base station is the serving base station of the calling user equipment (oBTS of Figure 4).
  • the receiving unit 71 may receive a channel activation message sent by the first base station controller, where the channel activation message carries a first IP transport layer address and/or a second IP transport layer address.
  • the receiving unit 71 may further receive, by the first base station controller, a first user call flow information table and a second user call flow information table, where the first user call flow information table is the first base station to The user call flow information table of the first base station controller, and the second user call flow information table is a user call flow information table of the first base station to the second base station.
  • First user call flow information table for connection unit 72 Use before establishing a user plane passthrough connection.
  • the second user call flow information table is used by the connection unit 72 after establishing the user plane through connection.
  • the connecting unit 72 may detect whether the second base station is reachable by using the first IP transport layer address and the second IP transport layer address, and send the detection result to the first base station controller, so that The first base station controller sends a direct feasibility indication information to the first mobile switching center according to the detection result, and the direct feasibility indication information is used to indicate whether the user plane through connection can be established between the base station 70 and the second base station.
  • the receiving unit 71 may further receive a direct connection control message from the first base station controller, where the direct connection control message is used to indicate establishing a user plane through connection, releasing a user plane through connection, or implementing dual transmission.
  • the connection unit 72 can also send a direct connect response message to the first base station controller, and the send direct connect response message is a response to the through connection control message.
  • the embodiment of the present invention can also support supplementary services and lawful interception functions such as playback, three-party calling, etc., because the core network participates in the decision of whether the user plane of the BTS is directly connected and accurately knows the current state.
  • FIG. 8 is a schematic block diagram of a base station controller in accordance with one embodiment of the present invention.
  • An example of the base station controller 80 of FIG. 8 is oBSC or tBSC in FIG. 4, including an allocating unit 81, a receiving unit 82, and a transmitting unit 83.
  • the allocating unit 81 allocates a first internet protocol IP transport layer address to the first base station.
  • the receiving unit 82 receives the second IP transport layer address assigned by the second base station controller to the second base station.
  • the transmitting unit 83 transmits the first IP transport layer address and the second IP transport layer address to the first base station.
  • the first base station can establish a user plane through connection with the second base station by using the first IP transport layer address and the second IP transport layer address.
  • the embodiment of the present invention enables the first base station to learn the IP transport layer address of the second base station under different base station controllers, thereby enabling the user plane direct connection by using the routing function of the IP transport network, and implementing the cross-base station
  • the call voice data is directly transmitted between the base stations of the controller.
  • the base station controller 80 may perform operations related to the base station controller in Figures 1-4, and will not be described in detail to avoid redundancy.
  • base station controller 80 may be the controller of the serving base station of the calling user equipment (oBSC of Figure 4)
  • the second base station controller is the controller of the serving base station of the called user equipment (tBSC of Figure 4).
  • the base station controller 80 may be a controller of the serving base station of the called user equipment. (tBSC of Figure 4)
  • the second base station controller is the controller of the serving base station of the calling user equipment (oBSC of Figure 4).
  • oBSC and tBSC can be different controllers.
  • the sending unit 83 may send a channel activation message to the first base station, where the channel activation message carries the first IP transport layer address and/or the second IP transport layer address.
  • the sending unit 83 may further send, to the first base station, a first user call flow information table and a second user call flow information table, where the first user call flow information table is the first base station to the first a user call flow information table of the base station controller, wherein the second user call flow information table is a user call flow information table of the first base station to the second base station, so that before the user plane direct connection is established between the first base station and the second base station, The first base station uses the first user call flow information table, and after establishing a user plane direct connection between the first base station and the second base station, the first base station uses the second user call flow information table.
  • the receiving unit 82 may further receive, by using the first IP transport layer address and the second IP transport layer address, the first base station to detect whether the second base station is reachable.
  • the sending unit 83 may further send the through-feasibility indication information to the first mobile switching center according to the detection result, where the direct feasibility indication information is used to indicate whether a user plane through connection can be established between the first base station and the second base station.
  • FIG. 9 is a schematic block diagram of a base station controller according to another embodiment of the present invention.
  • the base station controller of Fig. 9 differs from that of Fig. 8 in that it further includes a first timer 84 (e.g., Tab-1 described above) and a processing unit 85.
  • the receiving unit 82 may receive a direct connection control message from the first mobile switching center, and the direct connection control message is used to indicate that the user plane direct connection is established, the user plane direct connection is released, or the dual transmission is implemented to meet the legal listening requirement.
  • the transmitting unit 83 can forward the through connection control message to the first base station.
  • the receiving unit 82 can also receive a through connection response message from the first base station, the direct connection response message being a response to the through connection control message.
  • the first timer 84 is started after the transmitting unit 83 forwards the through connection control message to the first base station. If the receiving unit 82 does not receive the through connection response message sent by the first base station after the first timer 84 expires, the processing unit 85 requests the first base station to abandon the establishment of the user plane through connection, and the sending unit 83 is further configured to The mobile switching center sends a direct connection failure message, and the direct connection failure message is used to indicate that the user plane through connection cannot be established.
  • the foregoing through connection control message is used to indicate that the user is released.
  • the base station controller 90 also includes a second timer 86 (e.g., Tab-2 described above). After the transmitting unit 83 forwards the through connection control message to the first base station, the second timer 86 is started. If the receiving unit 83 does not receive the through connection response message (for example, the through connection release response message) sent by the first base station after the second timer 86 expires, the sending unit 84 is further configured to send the clear to the first mobile switching center. The request message informs the first mobile switching center to release the call.
  • the through connection response message for example, the through connection release response message
  • the sending unit 83 may send the layer 3 information message to the first mobile switching center, and the layer 3 information message carries the first IP transport layer address.
  • the receiving unit 82 may receive an assignment request message from the first mobile switching center, where the assignment request message carries a second IP transport layer address.
  • the embodiment of the present invention enables the first base station to learn the IP transport layer address of the second base station under different base station controllers, thereby enabling the user plane direct connection by using the routing function of the IP transport network, and implementing the cross-base station
  • the call voice data is directly transmitted between the base stations of the controller.
  • FIG. 10 is a schematic block diagram of a mobile switching center in accordance with one embodiment of the present invention.
  • An example of the mobile switching center 100 of FIG. 10 is the oMSC or tMSC of FIG. 4, including the receiving unit 110 and the transmitting unit 120.
  • the receiving unit 110 receives, from the second mobile switching center, a second Internet Protocol IP transport layer address assigned by the second base station controller to the second base station.
  • the transmitting unit 120 transmits a second IP transport layer address to the first base station controller.
  • the first base station controller may send the second IP transport layer address to the first base station and the first IP transport layer address allocated by the first base station controller to the first base station and assist the first base station to utilize the first IP transport layer address and
  • the second IP transport layer address establishes a user plane through connection with the second base station.
  • the embodiment of the present invention enables the first base station to learn the IP transport layer address of the second base station under different base station controllers, thereby enabling the user plane direct connection by using the routing function of the IP transport network, and implementing the cross-base station.
  • the call voice data is directly transmitted between the base stations of the controller.
  • the mobile switching center 100 can perform operations related to the mobile switching center in FIGS. 1-4, and will not be described in detail to avoid repetition.
  • the mobile switching center 100 may be a mobile switching center (oMSC of FIG. 4) of the office where the calling user equipment is located, and the second mobile switching center is a mobile switching center (tMSC of FIG. 4) of the office where the called user equipment is located.
  • the mobile switching center 100 may be a mobile switching center of the office where the called user equipment is located (tMSC of FIG. 4), and the second mobile switching center is the calling user.
  • the mobile switching center of the office where the equipment is located (oMSC of Figure 4).
  • oMSC and tMSC can be the same or different mobile switching centers.
  • the receiving unit 110 may receive the direct feasibility indication information from the first base station controller, where the direct feasibility indication information is used to indicate whether a user plane through connection can be established between the first base station and the second base station. .
  • the sending unit 120 may send, to the second mobile switching center, indication information indicating that the first base station supports the through-through; and the through-feasibility indication information indicates that the user-side direct communication cannot be established.
  • the sending unit 120 may send indication information indicating that the first base station does not support the straight-through to the second mobile switching center.
  • the sending unit 120 may send the through connection control to the first base station controller according to the through feasibility indication information and the indication information received from the second mobile switching center indicating whether the second base station supports the direct connection.
  • the message, the direct connection control message is used to indicate that the user plane is directly connected, the user plane is directly connected, or dual-issue is implemented to meet the legitimate listening requirement.
  • the embodiment of the present invention can also support supplementary services such as playback, three-party calling, and lawful interception work, because the core network participates in the decision of whether the user plane of the BTS is directly connected and accurately knows the current state.
  • a communication system may include the above-described base station 70, base station controller 80 or 90, or mobile switching center 100.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another The system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Dans ses modes de réalisation, la présente invention se rapporte à un procédé de communication, à une station de base, à un contrôleur de station de base et à un centre de commutation de communications mobiles. Le procédé de communication selon l'invention comprend les étapes suivantes : une première station de base reçoit une première adresse de couche transport de Protocole Internet (IP) qui est attribuée par un premier contrôleur de station de base à la première station de base, et elle reçoit, du premier contrôleur de station de base, une seconde adresse de couche transport de protocole IP qui est attribuée par un second contrôleur de station de base à une seconde station de base ; ensuite, la première station de base établit un plan usager via une connexion avec la seconde station de base au moyen de l'utilisation de la première adresse de couche transport de protocole IP et de la seconde adresse de couche transport de protocole IP. Dans les modes de réalisation de la présente invention, la station de base peut être amenée à connaître une adresse de couche transport de protocole IP d'une autre station de base qui est contrôlée par un contrôleur de station de base différent. D'autre part, la station de base peut mettre en œuvre le plan usager via une connexion qui utilise une fonction de routage d'un réseau de transport IP. La station de base peut ainsi transmettre directement des données d'appel vocal entre des stations de base qui sont contrôlées par des contrôleurs de station de base différents.
PCT/CN2012/085654 2011-11-30 2012-11-30 Procédé de communication, station de base, contrôleur de station de base et centre de commutation de communications mobiles WO2013079019A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110390165.0 2011-11-30
CN201110390165.0A CN102497396B (zh) 2011-11-30 2011-11-30 通信方法、基站、基站控制器和移动交换中心

Publications (1)

Publication Number Publication Date
WO2013079019A1 true WO2013079019A1 (fr) 2013-06-06

Family

ID=46189181

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/085654 WO2013079019A1 (fr) 2011-11-30 2012-11-30 Procédé de communication, station de base, contrôleur de station de base et centre de commutation de communications mobiles

Country Status (2)

Country Link
CN (1) CN102497396B (fr)
WO (1) WO2013079019A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102497396B (zh) * 2011-11-30 2015-07-22 华为技术有限公司 通信方法、基站、基站控制器和移动交换中心
EP3512292B1 (fr) * 2014-09-16 2021-09-15 Huawei Technologies Co., Ltd. Appareils et procédés de communication pour la réduction de la charge du réseau
CN109246772B (zh) * 2017-05-05 2021-02-23 华为技术有限公司 一种数据传输方法、相关设备及系统
CN109600807B (zh) * 2018-12-29 2021-06-22 华为技术服务有限公司 寻呼的方法和无线网络控制器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1348288A (zh) * 2000-10-13 2002-05-08 艾利森电话股份有限公司 在第三代无线接入网络中连接节点的系统和方法
JP2004229098A (ja) * 2003-01-24 2004-08-12 Ntt Docomo Inc 無線通信システム、無線通信方法、無線制御装置及びローカル交換機
CN101541108A (zh) * 2008-03-19 2009-09-23 富士通株式会社 移动通信系统
CN101945418A (zh) * 2010-09-20 2011-01-12 中兴通讯股份有限公司 媒体面的建立方法和装置
CN102045871A (zh) * 2009-10-23 2011-05-04 中兴通讯股份有限公司 本地交换通信方法和系统
CN102497396A (zh) * 2011-11-30 2012-06-13 华为技术有限公司 通信方法、基站、基站控制器和移动交换中心

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2431239C2 (ru) * 2007-02-02 2011-10-10 Хуавэй Текнолоджиз Ко., Лтд. Способ, устройство и система для установления канала-носителя в gsm-сети
CN101902824B (zh) * 2009-05-31 2012-11-07 华为技术有限公司 一种本地交换的实现方法、移动交换中心和通信系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1348288A (zh) * 2000-10-13 2002-05-08 艾利森电话股份有限公司 在第三代无线接入网络中连接节点的系统和方法
JP2004229098A (ja) * 2003-01-24 2004-08-12 Ntt Docomo Inc 無線通信システム、無線通信方法、無線制御装置及びローカル交換機
CN101541108A (zh) * 2008-03-19 2009-09-23 富士通株式会社 移动通信系统
CN102045871A (zh) * 2009-10-23 2011-05-04 中兴通讯股份有限公司 本地交换通信方法和系统
CN101945418A (zh) * 2010-09-20 2011-01-12 中兴通讯股份有限公司 媒体面的建立方法和装置
CN102497396A (zh) * 2011-11-30 2012-06-13 华为技术有限公司 通信方法、基站、基站控制器和移动交换中心

Also Published As

Publication number Publication date
CN102497396B (zh) 2015-07-22
CN102497396A (zh) 2012-06-13

Similar Documents

Publication Publication Date Title
EP1631011B1 (fr) Soft handover vertical dans des réseaux sans fil
US20150016421A1 (en) System and method for transitioning a communication session between networks that are not commonly controlled
US20070213060A1 (en) Method and apparatus for supporting handoff in an lte gtp based wireless communication system
WO2015096465A1 (fr) Procédé de distribution de contexte de clé de sécurité, entité de gestion de mobilité et station de base
WO2016061789A1 (fr) Système, appareil et procédé de traitement de message de commande de ressource radio (rrc)
WO2008092408A1 (fr) Procédé, dispositif et système destinés à établir une connexion de signalisation s1 dans un réseau élaboré
JP4997285B2 (ja) Ｈｒｐｄネットワークパケットデータサービスの確立方法
JP2010521940A (ja) Ｓａｅ／ｌｔｅのためのモビリティ管理（ｍｍ）およびセッション管理（ｓｍ）
WO2012167547A1 (fr) Procédé de transfert intercellulaire entre des stations de base, station de base et système de communication
CN105873241B (zh) 建立通话连接的方法及装置
WO2016061785A1 (fr) Procédé de connexion de commande de ressource radio (rrc), procédé de reconnexion et appareil
KR20210113369A (ko) Pdu 세션 활성화 방법, 페이징 방법 및 그의 장치
US11553549B2 (en) Multi-access PDU session state synchronization between UE and network
JP2011508495A (ja) Ｒｎｃ間ハンドオーバにおけるａインタフェース上でのｔｄｍ（ａｏｔｄｍ）あるいは、ｉｐ（ａｏｉｐ）ベアラの確立
WO2009026835A1 (fr) Système, appareil et procédé pour un transfert de service d'utilisateur
WO2011085668A1 (fr) Procédé, dispositif et système de commande de transfert
WO2014183617A1 (fr) Procédé et appareil de découverte de nœud relais
WO2014205772A1 (fr) Procédé, dispositif et système permettant d'établir un réseau sans fil
WO2022067818A1 (fr) Procédé et appareil de transmission de données
WO2015120685A1 (fr) Procédé de sélection d'une passerelle de dérivation et contrôleur associé
WO2013079019A1 (fr) Procédé de communication, station de base, contrôleur de station de base et centre de commutation de communications mobiles
WO2009067912A1 (fr) Procédé et dispositif de commutation pour mettre en œuvre une commutation
WO2010054586A1 (fr) Procédé de commutation locale dans un sous-système de station de base (bss), appareil et système correspondants
WO2014127699A1 (fr) Procédé, équipement et système pour établir un chemin de communication directe
WO2007102953A1 (fr) Procédé et appareil pour la prise en charge du transfert et procédures de relocalisation du sous-système de réseau de radiocommunication de desserte dans un système de communication sans fil basé sur un gprs à tunnel unique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12853025

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12853025

Country of ref document: EP

Kind code of ref document: A1